Which 3 x 18 mailers 24 pack should I start with?

Start with P3018K if you need a standard exact-size option and its product page details match your packing requirement.

When should I choose a higher board spec?

Choose a higher listed board spec only when the shipment or buying standard calls for it. Compare the exact product page details before standardizing an upgraded SKU.

What if my item is close to 3 x 18?

Measure the product after adding the packing material you actually use. If any finished packed dimension is over the listed inside size, choose a larger product instead of forcing the fit.

Can I reorder by SKU?

Yes. Reorder by the same SKU when the product, pack quantity, and packing workflow have not changed. Use the quote path for larger, mixed-SKU, or recurring orders.

3 x 18 mailers 24 pack

Packrift carries 3 x 18 kraft mailers in 24 packs when matching SKUs are in stock.

Use this page to choose the right 3 x 18 mailers from Packrift's matching products.

5 matching SKUs Starts at $1.43/box 24-pack default

Default pick: SKU P3018K

If the item fits comfortably inside a 3 x 18 product, P3018K is the practical first buy. The other matching SKUs are useful when a specific exterior, style, pack, or board spec is required.

Shop SKU P3018K Request a bulk quote

$1.43/box $34.30 per 24-pack

Quick Decision

Lowest-cost default

Choose P3018K when the product and cushioning fit inside 3 x 18 and the order does not need a special exterior or board grade.

Default 24 pack Exact size

Higher board spec

Compare the ECT-44, ECT-48, double-wall, or 250# options only when those specs are part of the buying requirement.

ECT Double wall 250#

Presentation or workflow

Move to white when the outside of the carton matters, or multi-depth when the same footprint ships across different item heights.

White Multi-depth

Matching Packrift SKUs

3x18 Kraft Mailing Tubes with Caps - Secure Shipping, Case of 24

Recommended default

SKU P3018K

3x18 Kraft Mailing Tubes with Caps - Secure Shipping, Case of 24

Default exact-size option: kraft

Choose this if: you want the standard 3 x 18 option at the lowest shown bundle cost in this matching set.

Skip if: you need a white exterior, multi-depth scoring, ECT-44, ECT-48, or W5C/250#.

kraft 24 pack

$34.30 $1.43/box

View product

SKU P3018W

3x18 White Spiral Wound Mailing Tubes with Caps - Case of 24

White exterior: white

Choose this if: you want the same 3 x 18 size with a white corrugated exterior.

Skip if: the outside color does not matter and kraft is acceptable.

White 24 pack

$40.80 $1.70/box

View product

SKU P3018BL

3x18 Black Mailing Tubes 0.07" Spiral Wound - 24 Pack

Exact-size comparison option:

Choose this if: this SKU's listed product page details match your packing requirement.

Skip if: another matching SKU better fits the material, pack quantity, or board spec you need.

24 pack

$61.03 $2.54/box

View product

SKU P3018G

3x18 Green Mailing Tubes - 0.07" Spiral Wound Fibreboard, Case of 24

Exact-size comparison option:

Choose this if: this SKU's listed product page details match your packing requirement.

Skip if: another matching SKU better fits the material, pack quantity, or board spec you need.

24 pack

$61.03 $2.54/box

View product

SKU P3018R

3x18 Red Mailing Tubes with Caps - Spiral Wound Fibreboard, Case of 24

Exact-size comparison option:

Choose this if: this SKU's listed product page details match your packing requirement.

Skip if: another matching SKU better fits the material, pack quantity, or board spec you need.

24 pack

$61.03 $2.54/box

View product

Side-by-Side Details

SKU	Best fit	Strength / style	Pack	Bundle / unit	Choose when
P3018K	Default exact-size option	kraft	24	$34.30 / $1.43/box	you want the standard 3 x 18 option at the lowest shown bundle cost in this matching set.
P3018W	White exterior	white	24	$40.80 / $1.70/box	you want the same 3 x 18 size with a white corrugated exterior.
P3018BL	Exact-size comparison option		24	$61.03 / $2.54/box	this SKU's listed product page details match your packing requirement.
P3018G	Exact-size comparison option		24	$61.03 / $2.54/box	this SKU's listed product page details match your packing requirement.
P3018R	Exact-size comparison option		24	$61.03 / $2.54/box	this SKU's listed product page details match your packing requirement.

Use this size when

Your packed item needs a 3 x 18 inside size.
Your product and protective packing fit without forcing the product closed.
You want to compare exact matching SKUs before choosing a buying path.

Do not use this size when

Your product needs more room on any listed inside dimension.
You need a compliance, carrier, food, or hazardous-material claim not stated on the product page.
A nearby lower-height product would reduce empty space while keeping the same footprint.

Before you reorder

Confirm the SKU, pack quantity, price, and availability on the live product page.
Reorder by SKU when the product and packing workflow have not changed.
Use the quote path for larger, mixed-SKU, or recurring orders.

FAQ

Which 3 x 18 mailers 24 pack should I start with?: Start with P3018K if you need a standard exact-size option and its product page details match your packing requirement.
When should I choose a higher board spec?: Choose a higher listed board spec only when the shipment or buying standard calls for it. Compare the exact product page details before standardizing an upgraded SKU.
What if my item is close to 3 x 18?: Measure the product after adding the packing material you actually use. If any finished packed dimension is over the listed inside size, choose a larger product instead of forcing the fit.
Can I reorder by SKU?: Yes. Reorder by the same SKU when the product, pack quantity, and packing workflow have not changed. Use the quote path for larger, mixed-SKU, or recurring orders.

Ready to choose this exact size?

Start with the default SKU, or use the quote path when you are buying recurring volume, comparing multiple SKUs, or standardizing packaging across a team.

Shop SKU P3018K Request a bulk quote